Went out and got a new 1 TB MyBookLive - to try an get images of /dev/sda1 and /dev/sda2 to save and retrieve my data on the sda4 partition on my original MyBookLive 2TB drive.
Using this to log my attempts! :^)

When I get time I will go through my notes in which I had to modify the above scripts and upload the one script.
You need to understand what is happening on each line of the script. For debugging I copied and pasted each line
into a root super user terminal.

I would be best to have the individual scripts converted into one big script as it would be easy to maintain.
Where setting up of the shell variables in disk-param.sh are defined and documented verbosely.

It was kind of difficult to get the case open to connect the 2TB WD drive to my Ubuntu desktop.

You have to take care to remove a lot of the screws that hold the My Book Live together so as not to short anything in
your desktop!!!